Redo Heroku stuff

Dockerfile

@@ -0,0 +1,16 @@
+FROM ubuntu:latest
+
+WORKDIR /opt
+COPY . .
+
+RUN apt update
+RUN apt upgrade -y
+RUN apt install -y python3 python3-pip wget
+
+RUN pip install -r requirements.txt
+
+RUN wget https://github.com/caddyserver/caddy/releases/download/v2.5.1/caddy_2.5.1_linux_amd64.tar.gz
+RUN tar -xzvf caddy_2.5.1_linux_amd64.tar.gz
+RUN rm caddy_2.5.1_linux_amd64.tar.gz
+
+ENTRYPOINT ["sh", "-c", "/opt/heroku_startup.sh"]

app.json

@@ -3,18 +3,25 @@
     "description": "Visual Weather api. Returns beautiful pictures with the current weather.",
     "repository": "https://github.com/mishailovic/VWapi",
     "website": "https://github.com/mishailovic/VWapi",
+    "stack": "container",
     "env": {
+      "APP_NAME": {
+        "description": "Heroku app name",
+        "value": "vwapi"
+      },
       "BOT_TOKEN": {
         "description": "Your Telegram bot token",
         "value": ""
       },
       "LRU_SIZE": {
         "description": "Size on an LRU cache, by default takes around 51 MB of RAM when full",
-        "value": "1024"
+        "value": "1024",
+        "required": false
       },
       "LRU_EXPIRE": {
         "description": "Time in seconds after which LRU cache entry expires (default: 30 min)",
-        "value": "1800"
+        "value": "1800",
+        "required": false
       },
       "MONGO_DB": {
         "description": "Telegram bot MongoDB database for analytics (disabled if not set)",
@@ -23,7 +30,8 @@
       },
       "API_BASE": {
         "description": "Change it to your local instance for better telegram bot performance.",
-        "value": "https://vwapi.herokuapp.com"
+        "value": "https://vwapi.herokuapp.com",
+        "required": false
       }
     }
   }

bot.py

@@ -1,5 +1,6 @@
 import urllib
 import uuid
+import os
 
 from pymongo import MongoClient
 from aiogram import Bot, Dispatcher, executor, types
@@ -118,4 +119,20 @@ async def inline_echo(inline_query: InlineQuery):
 
 
 if __name__ == "__main__":
-    executor.start_polling(dp, skip_updates=True)
+    # Heroku defines DYNO environment vaiable
+    if os.environ.get("DYNO"):
+        app_name = os.environ.get("APP_NAME")
+
+        async def on_startup(dp):
+            await bot.set_webhook(f"https://{app_name}.herokuapp.com/bot/{TOKEN}")
+
+        executor.start_webhook(
+            dispatcher=dp,
+            webhook_path=f"/bot/{TOKEN}",
+            on_startup=on_startup,
+            skip_updates=True,
+            host="localhost",
+            port=8081, # Caddy will take care of that
+        )
+    else:
+        executor.start_polling(dp, skip_updates=True)

config.py

@@ -2,11 +2,11 @@
 
 OWM_TOKEN = "9de243494c0b295cca9337e1e96b00e2"  # pro token already here, no need to change it
 
-LRU_SIZE = 1024 # Size on an LRU cache, by default takes around 51 MB of RAM when full
-LRU_EXPIRE = 1800 # Time in seconds after which LRU cache entry expires (default: 30 min)
+LRU_SIZE = int(os.environ.get("LRU_SIZE", "1024")) # Size on an LRU cache, by default takes around 51 MB of RAM when full
+LRU_EXPIRE = int(os.environ.get("LRU_EXPIRE", "1800")) # Time in seconds after which LRU cache entry expires (default: 30 min)
 
-TOKEN = os.environ.get('BOT_TOKEN')  # Telegram bot token, (TOKEN = "123456:qwertyuiop") if you running locally
+TOKEN = os.environ.get("BOT_TOKEN")  # Telegram bot token, (TOKEN = "123456:qwertyuiop") if you running locally
 
-MONGO_DB = "" # Telegram bot MongoDB database for analytics (disabled if not set)
+MONGO_DB = os.environ.get("MONGO_DB", "") # Telegram bot MongoDB database for analytics (disabled if not set)
 
-API_BASE = "https://vwapi.herokuapp.com" # Change it to your local instance for better telegram bot performance.
+API_BASE = os.environ.get("API_BASE", "https://vwapi.herokuapp.com") # Change it to your local instance for better telegram bot performance.

heroku.yml

@@ -0,0 +1,3 @@
+build:
+  docker:
+    web: Dockerfile

heroku_startup.sh

@@ -0,0 +1,17 @@
+# Start the services in the background
+python3 -m uvicorn weatherapi:app --port=8080 &
+python3 bot.py &
+
+cat << EOF > /opt/Caddyfile
+http://:${PORT} {
+    route / {
+    	reverse_proxy localhost:8080
+    }
+
+    route /bot/* {
+    	reverse_proxy localhost:8081
+    }
+}
+EOF
+
+/opt/caddy run -config /opt/Caddyfile